Answer:
B
Step-by-step explanation:
Since you are trying to find out half the number of students in a PE class, dividing would be most appropriate since you would be trying to find half.
Answer:
slope is -1/4
Step-by-step explanation:
=
= 
and so on...
formula: 
hope this helps!!!
Step-by-step explanation:



Now subtract.....

hence the answer is 3 ....
hope it helped !!!!